Composition for repelling rodents and insects.



JEAN IGNAZ LEIST, OF BROOKLYN, NEW YORK.

UNITED STATES PATENT OFFICE.

COMPOSITION FOR REPELLING RODEN TS AND INSECTS.

No Drawing.

T 0 all whom it may concern:

Be it known that I, JEAN IGNAZ Lnrs'r, a subject of the German Emperor, residing at Brooklyn, in the county of Kings, city and State of New York, have invented a new and useful Composition for Repelling Rodents and Insects.

The object of my invention is to provide a non-poisonous composition of matter, which may be economically produced and which may be readily used to rid dwellings, factory buildings, stores, etc., of rodents and insects, by driving them from re nises, the ingredients 0 my composition of nrafier being of a nature which will be re pulsive to rodents and insects so that the premises where my new and useful composition is used may be effectively rid of these ts. A further object of my invention is to produce a new and useful composition of j ,matter for the aforesaid purposes which 7 may-be employed in the form of a cgment or I plaster, or may be used same manner thgtputty.isemployed, the nature "of are composition being such that paint, calcimine or other similar coatings or coverings may be applied thereto, if desired.

as a filling in the I shall now proceed to set forth the constituents ofmy new and useful composition of matter and the manner in which it may be employed and the results attained thereby.

My composition consists of the following dry ingredients, which may be used in any quantity combined in the proportions stated,

of hydrated lime,

25 plasterParis, f u

I have found by experiments with differ.- ent materials that for the purposes of my invention a composition produced in accordance with the foregoing formula gives the most efficient results. The whiting or chalk combined with the clay form a durable base material, with which the plaster of Paris and Specification of Letters Patent. Patented J ille 25, 1918.

Application filed October 15, 1913. Serial No. 795,243.

cement readily commingle to produce a hard substance when mixed with marble dust, asbestine, and magnesium carbonate, in the proportion stated, the latter of which prevent cracking or breaking apart of the materials in the hardening or setting process. The casei p v i qualiemg preserved y tie use of borax, the hydrate oflnne serving as a scnvent for the binder; while, the powdered alum is employed to accelerate-the setting of the constituents of my composition. Thymol as is well known possesses a strong and peculiar odor and is added to the other ingredients a means for entrance into the premises. By

reason of the plastic nature of my compound, it will be seen that it may be readily applied the same as na tn inurmg stituents being 0 a nature to re it adhesive and susceptible to hardening within twelve to twenty-four hours after 1 application or use.

I have found that this composition of matter proves very efficacious in keeping buildings, adapted to various purposes, free from rodents in particular, by reason of it containing alum and th mol the peculiar odor of the latter 5cm repfil's getp r odents whifm a um wlien *mo stp refis applied thereto, throug e sa va o f' the 'rodent coming in contact therewith, prevents their gnawing the material, the effect, therefore, being to drive them away from the premises and resulting in their complete elimination therefrom. The composition is non-poisonous and has a further advantage in that the constituents thereof are of a nature which will render its employment desirable as a disinfectant.

If desired, the dry compound made in accordance with the foregoing formula may of rooms and; E3 a(:,"m any ace w ere r0 cuts or insects are likely to exist or use as Copies of this patent may he obtained for be used in powdered form as a means of ridding rooms and the like of flies and other winged insects, for such purposes the compound being placed in a. suitable receptacle in some portion of the room from which it is desired to eliminate the insects. M Y inr u ier o genised-inhssdnnenna sinii'efor thrown into creiices, etc., s 1milarly to other known powders which are used for exterminating croton bugs, roaches and the like, my compound differing from the other by reason of the fact that it does not kill the .insects and leave them about the premises, but drives them therefrom.

WhileI have given above certain proportions, for the ingredients for my composition, and have also set forth certain substances to be employed in the production thereof, it is obvious that the proportions of the substances may be varied and that certain other substances may be substituted for those named in my foregoing formula; for instance, in lieu of casein I may employ glue or gum, either of which is soluble in cold water similarly, to casein, while, pumice may be substituted for the marble dust, or tale for asbestine material, and so on, the fundamental idea of my new and useful composition of matter being to produce one which parts of whigng, wtsof clay, 2 parts of magnesia nate, 8 parW f gaggim 2 partsbf dement, 10 parts of powdered alum, 3 parts of powdered W and 3 parts of thvmol, and a suflicient quantity of cold water mixed therewith to form a plastic mass, which is adapted to harden upon exposure to the atmosphere.

In witness whereof I have hereunto set my hand in the presence of two subscribing witnesses this 25th day of September, 1913.

JEAN IGNAZ LEIST. Witnesses: 9

WM. 0. DUNN, P. FRANK SONNEK.

five cents each, by addressing the Commissioner of Patents,

i v Washington, I). G. 

